大家帮忙解一道微观经济学的题目吧 会追加分数的

Question

是 the cost of production 那一章的

题目一. 
Why can the distinction between fixed and variable costs be made in the short run, but not in the long run?

题目二
Many businesses see the use of telecommunications in the sales, marketing and product delivery processes as a significant way of cutting costs. The two forms of telecommunications often talked about are the telephone and the internet. Thus we have seen the emergence of phone banking and internet banking in the United Kingdom,the United States and Australia, as well as in high-income Europe. The cost savings? Phone banking costs are about 50 per cent of branch-based transactions costs. Internet banking costs are about 20 per cent of those associated with the provision of branch-based transactions. But can these methods work well in Asia? The household penetration rates (the percentage of households with ownership or their own access) of telephones and internet in the Asian region for the year 2008 will give us some clues.
大概意思就是说现代社会手机银行和网上银行在一些 类似英美澳洲，和一些高收入的欧洲国家出现。
手机银行转账的费用是柜台转账的50%，而网上银行的是柜台费用的20%。
所以这种方式在亚洲国家也适用吗？
下图是手机和网络在一些亚洲国家的家庭用户渗透率(普及率)。

问题是
In which countries does telephone banking have great potential ?
In which countries does telephone banking appear to have limited potential? 
Why???

Answer 1

1
短期内，固定成本不随产量变动而变动，即使不生产也必须承担这些费用，可变成本是指厂商在短期内所需支付的原材料、燃料、劳动投入等可调整生产要素是费用。可变成本是生产随产量变动的成本。而在长期，厂商可以根据其预期的产销量对生产规模进行调整。在该时期内，包括固定成本在内的一切成本项目都可以变动，因此长期成本中不存在固定成本与可变成本的区别。
2
香港。香港手机和互联网普及率高，有利于实施。
泰国。因为泰国手机普及率低，所以对于实施电话银行业务来说是不需要的。

Answer 2

题目一:
因为在长期看来，所有成本都是有足够的时间进行调整的，所以都可以看作可变成本，因而没有固定成本和可变成分之分。

Answer 3

看不懂